For example, in the (Java( language)) regex, ( language) nests inside (Java). Each nested or non-nested capturing group receives its own number, numbering starts at 1, and capturing groups are ...

Regular expressions in Java, Part 2: The Regex API. how-to. May 16, 2017 26 mins. ... An example of a regex-based lexical analyzer is JLex, the lexical generator for Java, ...

For those who could use a refresher, I highly recommend Jeffrey Frieldl's Mastering Regular Expressions, published by O'Reilly and Associates. I would, however, like to provide a few examples to help ...